610
FZUS51 KBOX 172303
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 PM EDT THU SEP 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-181200-
703 PM EDT THU SEP 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A COLD FRONT WILL CROSS THE WATERS TONIGHT THROUGH EARLY TOMORROW
MORNING WITH A PERIOD OF SHOWERS. HIGH PRESSURE BUILDS BACK IN FROM
THE NNW FRIDAY AFTERNOON INTO SATURDAY. THEN A DEVELOPING LOW
PRESSURE SYSTEM BRINGS THE THREAT OF WIDESPREAD RAIN, ESPECIALLY THE
SOUTHERN WATERS ON SUNDAY.
ANZ250-181200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 6 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NW
4 FT AT 6 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT, BECOMING S AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND NW 1 FOOT
AT 4 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
2 TO 3 FT. SHOWERS LIKELY.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-181200-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND E 2 FT AT
8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND NW 2 FT AT
3 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN AND SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 4 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-181200-
CAPE COD BAY-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
FRI
NW WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 1 FOOT AT 3 SECONDS
AND E 1 FOOT AT 8 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY
1 TO 3 NM.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
AROUND 2 FT. SHOWERS LIKELY.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-181200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E
2 FT AT 8 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE
4 FT AT 6 SECONDS AND W 1 FOOT AT 5 SECONDS.
SAT NIGHT AND SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 7 SECONDS AND SE 2 FT AT 3 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
3 FT AT 6 SECONDS AND SW 3 FT AT 7 SECONDS. SHOWERS LIKELY.
MON THROUGH TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT. SEAS 5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-181200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SW
2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. SHOWERS
LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-181200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS IN THE
MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND W
2 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND SW 1 FOOT
AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 5 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT, BECOMING E WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. SHOWERS LIKELY.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
5 FT. SHOWERS LIKELY.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 5 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS AROUND 25 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-181200-
NANTUCKET SOUND-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT
7 SECONDS. PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND E
1 FOOT AT 7 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND W
1 FOOT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND W 1 FOOT AT
5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 7 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND E 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. SHOWERS
LIKELY.
MON THROUGH TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-181200-
VINEYARD SOUND-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
SE 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND SE 1 FOOT AT 12 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND W 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND SE 1 FOOT AT 11 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. SHOWERS LIKELY.
MON AND MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-181200-
BUZZARDS BAY-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING N IN
THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT
5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND W 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND SW
1 FOOT AT 5 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND W 1 FOOT
AT 5 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 2 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 10 SECONDS, BECOMING S 2 FT AT 3 SECONDS AND E 1 FOOT
AT 10 SECONDS. SHOWERS LIKELY IN THE AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING E AFTER MIDNIGHT.
SEAS 2 TO 3 FT. SHOWERS LIKELY.
MON AND MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-181200-
RHODE ISLAND SOUND-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND W 2 FT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 8 SECONDS AND SE 1 FOOT AT 3 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 4 SECONDS AND SE 1 FOOT AT 11 SECONDS. SHOWERS LIKELY IN THE
AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT, BECOMING E WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. SHOWERS LIKELY.
MON AND MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-181200-
BLOCK ISLAND SOUND-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 9 SECONDS AND SW 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 7 SECONDS AND SE 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. SHOWERS LIKELY IN THE
AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING NE WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. SHOWERS LIKELY.
MON AND MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-181200-
BOSTON HARBOR-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS. PATCHY FOG AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS AROUND 10 KT. WAVES AROUND 2 FT.
SAT
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN AND SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SHOWERS LIKELY.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-181200-
NARRAGANSETT BAY-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. WAVES AROUND 2 FT. A SLIGHT CHANCE OF
SHOWERS THIS EVENING. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
AROUND 2 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS LIKELY IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
MON THROUGH TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-181200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS THIS EVENING, THEN SHOWERS LIKELY
AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER
MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: N
4 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS, BECOMING NE 5 FT AT
9 SECONDS AND NW 4 FT AT 5 SECONDS.
SAT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT
AT 6 SECONDS AND W 2 FT AT 5 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
3 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING E AFTER MIDNIGHT.
SEAS 3 TO 5 FT. SHOWERS LIKELY, MAINLY IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-181200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS AROUND 3 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND
E 2 FT AT 8 SECONDS. PATCHY FOG IN THE MORNING. A CHANCE OF
SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS, BECOMING N 5 FT AT
8 SECONDS AND SW 3 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N
5 FT AT 7 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT AND SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: N 4 FT AT 7 SECONDS AND SE 2 FT AT 4 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SW
6 FT AT 7 SECONDS AND E 3 FT AT 8 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-181200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 PM EDT THU SEP 17 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT
AT 7 SECONDS AND W 3 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND W 1 FOOT AT
5 SECONDS.
SAT NIGHT AND SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: S 4 FT AT 5 SECONDS AND NE 4 FT AT 7 SECONDS.
SUN NIGHT
SE WINDS AROUND 10 KT. SEAS 5 TO 8 FT. WAVE DETAIL:
SW 8 FT AT 7 SECONDS AND NE 2 FT AT 8 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. SHOWERS LIKELY.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 5 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 9 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-181200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 PM EDT THU SEP 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 7 SECONDS AND
SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND SW 1 FOOT
AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
NE 3 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT, BUILDING TO 3 TO
5 FT IN THE AFTERNOON. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND E
2 FT AT 8 SECONDS, BECOMING S 5 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 7 FT. SHOWERS LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
6 FT. SHOWERS LIKELY.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 6 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
6 TO 9 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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